﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web;

namespace ZLB_Unility.Common
{
    public class ToolHelper
    {
        #region Stream与byte[]互转
        public static byte[] StreamToBytes(Stream stream)
        {
            byte[] bytes = new byte[stream.Length];
            stream.Read(bytes, 0, bytes.Length);

            // 设置当前流的位置为流的开始 
            stream.Seek(0, SeekOrigin.Begin);
            stream.Close();
            return bytes;
        }

        public static Stream BytesToStream(byte[] bytes)
        {
            Stream stream = new MemoryStream(bytes);
            return stream;
        }

        #endregion


        #region 字典转换为url参数
        /// <summary>
        /// 组装普通文本请求参数。
        /// </summary>
        /// <param name="parameters">Key-Value形式请求参数字典</param>
        /// <returns>URL编码后的请求数据</returns>
        public static string BuildQuery(IDictionary<string, object> parameters, string charset = "utf-8", bool flag = true, string connector = "&")
        {
            IEnumerator<KeyValuePair<string, object>> dem = parameters.GetEnumerator();
            return BuildQuery(dem, charset, flag, connector);
        }


        public static string BuildQuery(IEnumerator<KeyValuePair<string, object>> dem, string charset = "utf-8", bool flag = true, string connector = "&")
        {
            StringBuilder postData = new StringBuilder();
            bool hasParam = false;
            while (dem.MoveNext())
            {
                string name = dem.Current.Key;
                string value = string.Empty;
                if (dem.Current.Value != null)
                    value = dem.Current.Value.ToString();
                // 忽略参数名或参数值为空的参数
                if (!string.IsNullOrEmpty(name)) // && !string.IsNullOrEmpty(value)
                {
                    if (hasParam)
                    {
                        postData.Append(connector);
                    }

                    postData.Append(name);
                    postData.Append("=");
                    string encodedValue = string.Empty;
                    if (flag)
                    {
                        encodedValue = HttpUtility.UrlEncode(value, Encoding.GetEncoding(charset));
                    }
                    {
                        encodedValue = value;
                    }

                    postData.Append(encodedValue);
                    hasParam = true;
                }
            }

            return postData.ToString();
        }
        #endregion

        #region 手机号校验
        public static bool IsPhone(string mobile)
        {
            if (string.IsNullOrEmpty(mobile))
                return false;
            return Regex.IsMatch(mobile, @"^(13|14|15|16|18|19|17)\d{9}$");
        }
        #endregion

        #region 身份证校验
        public static bool IsIDCard(string number)
        {
            try
            {
                if (number.Length != 15 && number.Length != 18)
                {
                    return false;
                }
                number = number.ToUpper();
                if (number.Length == 18)
                {
                    bool check = CheckIDCard18(number);
                    return check;
                }
                else
                {
                    bool check = CheckIDCard15(number);
                    return check;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return false;
            }
        }

        private static bool CheckIDCard18(string idNumber)
        {
            long n = 0;
            if (long.TryParse(idNumber.Remove(17), out n) == false
                || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false)
            {
                Console.WriteLine("数字验证失败=" + idNumber);
                return false;//数字验证  
            }
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
            if (address.IndexOf(idNumber.Remove(2)) == -1)
            {
                Console.WriteLine("省份验证失败=" + idNumber);
                return false;//省份验证  
            }
            string birth = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");
            DateTime time = new DateTime();
            if (DateTime.TryParse(birth, out time) == false)
            {
                Console.WriteLine("生日验证失败=" + birth);
                return false;//生日验证  
            }
            string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
            string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
            char[] Ai = idNumber.Remove(17).ToCharArray();
            int sum = 0;
            for (int i = 0; i < 17; i++)
            {
                sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
            }
            int y = -1;
            Math.DivRem(sum, 11, out y);
            if (arrVarifyCode[y] != idNumber.Substring(17, 1).ToLower())
            {
                //Console.WriteLine("校验码验证失败=" + idNumber);
                return false;//校验码验证  
            }
            return true;//符合GB11643-1999标准  
        }

        /// <summary>  
        /// 15位身份证号码验证  
        /// </summary>  
        private static bool CheckIDCard15(string idNumber)
        {
            long n = 0;
            if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14))
            {
                return false;//数字验证  
            }
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
            if (address.IndexOf(idNumber.Remove(2)) == -1)
            {
                return false;//省份验证  
            }
            string birth = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-");
            DateTime time = new DateTime();
            if (DateTime.TryParse(birth, out time) == false)
            {
                return false;//生日验证  
            }
            return true;
        }
        #endregion

        public static string GetBirthday(string idNumber)
        {
            string birthDay = string.Empty;
            if (idNumber.Length == 18)
                birthDay = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");
            else
                birthDay = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-");

            return birthDay;
        }

        public static int GetAgeByBirthdate(DateTime birthdate)
        {
            DateTime now = DateTime.Now;
            int age = now.Year - birthdate.Year;
            if (now.Month < birthdate.Month || (now.Month == birthdate.Month && now.Day < birthdate.Day))
                age--;
            return age < 0 ? 0 : age;
        }
    }
}
